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  1. The exact nature of this Hilbert space is dependent on the system – for example, for describing position and momentum the Hilbert space is the space of complex square-integrable functions (), while the Hilbert space for the spin of a single proton is simply the space of two-dimensional complex vectors with the usual inner product.

  2. en.wikipedia.org › wiki › Soviet_rubleSoviet ruble - Wikipedia

    In addition to regular cash rubles, other types of rubles were also issued, such as several forms of convertible ruble, transferable ruble, clearing ruble, Vneshtorgbank cheque, etc.; also, several forms of virtual rubles (called "cashless ruble", безналичный рубль) were used for inter-enterprise accounting and international ...

  3. Any two-level quantum system can form a qubit, and there are two predominant ways to form a qubit using the electronic states of an ion: Two ground state hyperfine levels (these are called "hyperfine qubits") A ground state level and an excited level (these are called the "optical qubits")

  4. International relations scholars use the term polarity to describe the distribution of power in the international system. Unipolarity refers to an international system characterized by one hegemon (e.g. United States in the post-Cold War period), bipolarity to an order with two great powers or blocs of states (e.g. the Cold War), and ...

  5. UNITARY TAX SYSTEM -- Under a unitary tax system, the profits of the various branches of an enterprise or the various corporations of a group are calculated as if the entire group is a unity. A formula is used to apportion the net income of the whole group to the various parts of the group.

  6. en.wikipedia.org › wiki › UgandaUganda - Wikipedia

    Uganda (Yuganda in Ugandan languages), officially the Republic of Uganda (Swahili: Jamhuri ya Uganda), is a landlocked country in East Africa.The country is bordered to the east by Kenya, to the north by South Sudan, to the west by the Democratic Republic of the Congo, to the south-west by Rwanda, and to the south by Tanzania.

  7. en.wikipedia.org › wiki › FranceFrance - Wikipedia

    France (French: ), officially the French Republic (French: République française [ʁepyblik frɑ̃sɛz]), is a transcontinental country predominantly located in Western Europe and spanning overseas regions and territories in the Americas and the Atlantic, Pacific and Indian Oceans.